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Changes in Clinical Context for Kaposi’s Sarcoma and Non-Hodgkin Lymphoma Among People With HIV Infection in the United States.

Changes in Clinical Context for Kaposi’s Sarcoma and Non-Hodgkin Lymphoma Among People With HIV Infection in the United States.
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Yanik EL, Achenbach CJ, Gopal S, Coghill AE, Cole SR, Eron JJ, Moore RD, Mathews WC, Drozd DR, Hamdan A, Ballestas ME, Engels EA,


Yanik EL, Achenbach CJ, Gopal S, Coghill AE, Cole SR, Eron JJ, Moore RD, Mathews WC, Drozd DR, Hamdan A, Ballestas ME, Engels EA, (click to view)

Yanik EL, Achenbach CJ, Gopal S, Coghill AE, Cole SR, Eron JJ, Moore RD, Mathews WC, Drozd DR, Hamdan A, Ballestas ME, Engels EA,

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Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2016 08 0934(27) 3276-83 doi 10.1200/JCO.2016.67.6999

Abstract
PURPOSE
The biology of HIV-associated cancers may differ depending on immunologic and virologic context during development. Therefore, an understanding of the burden of Kaposi’s sarcoma (KS) and non-Hodgkin lymphoma (NHL) relative to antiretroviral therapy (ART), virologic suppression, and CD4 count is important.

PATIENTS AND METHODS
KS and NHL diagnoses during 1996 to 2011 were identified among patients with HIV infection in eight clinical cohorts in the United States. Among patients in routine HIV clinical care, the proportion of cases in categories of ART use, HIV RNA, and CD4 count at diagnosis were described across calendar time. Person-time and incidence rates were calculated for each category.

RESULTS
We identified 466 patients with KS and 258 with NHL. In recent years, KS was more frequently diagnosed after ART initiation (55% in 1996 to 2001 v 76% in 2007 to 2011; P-trend = .02). The proportion of patients with NHL who received ART was higher but stable over time (83% overall; P-trend = .81). An increasing proportion of KS and NHL occurred at higher CD4 counts (P < .05 for KS and NHL) and with undetectable HIV RNA (P < .05 for KS and NHL). In recent years, more person-time was contributed by patients who received ART, had high CD4 counts and had undetectable HIV RNA, whereas incidence rates in these same categories remained stable or declined. CONCLUSION
Over time, KS and NHL occurred at higher CD4 counts and lower HIV RNA values, and KS occurred more frequently after ART initiation. These changes were driven by an increasing proportion of patients with HIV who received effective ART, had higher CD4 counts, and had suppressed HIV RNA and not by increases in cancer risk within these subgroups. An improved understanding of HIV-associated cancer pathogenesis and outcomes in the context of successful ART is therefore important.

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